A boat travels 9 km upstream and 9 km back. The time for the round trip is 5 hours. The speed of the stream is 2km/hr. What is the speed of the boat in still water?

An escalator at a shopping center is 200 ft and 9 inches long, and rises at an angle of 15 degrees. What is the vertical rise of the escalator?

Mr Toshio lent out11 rulers at the beginning of class, collected 4 rulers in the middle of class, and gave out 7 at the end of class. He had 18 at the end of the day. How many rulers did he start with. what is the first step to solving this problem?

A local zoo had a total of 98,464 visitors last year. The zoo was open every day except for three holidays. On average, about how many visitors did the zoo have each day?

If a=b, then a-6=b-6 which algebraic property is illustrated above? A. Subtraction property of equality B. reflextive property C. symetric property D. transitive property

Suppose that y varies directly with x, and = y15 when = x6.

The mass of a jar of sugar is 1.9 kg what is the total mass of 13 jars of sugar

From a standard deck of 54 cards what is the probability of randomly drawing a 5 or queen

Solve the inequality 2 (p - 7) > 8

Chris has a bag with 4 black socks and 6 red socks (so there are 10 socks in total). Timothy reaches into the bag and grabs two socks without replacement. Find the probability that he will not grab two red socks.

Lee can read 1,100 words in 5 minutes. At this rate how many words would he read in 9 minutes?